CN1755869A - Discharge lamp, its manufacturing method and discharge lamp with dielectric potential barrier - Google Patents
Discharge lamp, its manufacturing method and discharge lamp with dielectric potential barrier Download PDFInfo
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- CN1755869A CN1755869A CNA2005100959419A CN200510095941A CN1755869A CN 1755869 A CN1755869 A CN 1755869A CN A2005100959419 A CNA2005100959419 A CN A2005100959419A CN 200510095941 A CN200510095941 A CN 200510095941A CN 1755869 A CN1755869 A CN 1755869A
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- glass tube
- discharge lamp
- heavy section
- heat
- lamp
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
- H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/26—Sealing together parts of vessels
- H01J9/265—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps
- H01J9/266—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps specially adapted for gas-discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/26—Sealing parts of the vessel to provide a vacuum enclosure
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The invention provides a manufacturing method for a discharge lamp tube capable of reducing manufacturing cost of a discharge glass tube and improving its intensity. One end of a glass tube is heat sealed not through a bead material. A heat-resistant thin rod is inserted from an open end part opposite to the sealing end part of the glass tube as far as a part which is apart from the sealing end part of the glass tube by the target lamp length. In a state that the heat-resistant thin rod is inserted, the part of the glass tube apart by target lamp length is heated for melting the glass tube of the part to form a banking part by surface tension. The heat-resistant thin rod is drawn out from the open end part of the glass tube to evacuate internal air from the open end part of the glass tube. A discharge medium is injected into the glass tube. The just outside nearer the open end part than the banking part of the glass tube is heated to cut off an excessive part of the glass tube while leaving the banking part, and the banking part of the glass tube is heat sealed. Thus, the discharge lamp tube is manufactured.
Description
Invention field
The present invention relates to discharge lamp and manufacture method thereof and dielectric barrier discharge lamp.
Background technology
The so-called dielectric barrier discharge-type low-pressure discharge lamp that has electrode on the outer surface as the tubular glass lamp container, known Japan Patent for example real open in the clear 61-126559 communique on the books.Figure 24 illustrates the structure of the dielectric discharge type low-pressure discharge lamp of the present application people trial-production with the technology of this communique record as a reference.Among Figure 24, the 303rd, low-pressure discharge lamp, the 310th, the tubular glass lamp container, the mist filler 360 of mercury and rare gas is enclosed in the inside of this tubular glass lamp container 310.The necessary luminescent coating 370 that on the internal face of tubular glass lamp container 310, forms.Dispose the outer electrode 321,326 that constitutes by Ampereconductors layer 331,336 on the both ends outer surface of tubular glass lamp container 310.The Ampereconductors layer 331,336 of this outer electrode 321,326 forms by making the end immerse the ultrasonic soldering groove.
In the low-pressure discharge lamp 303 shown in Figure 24,313 and 316 is the sealings at the both ends of tubular glass lamp container 310.In the manufacturing process, the no bead sealing 316 of one end was heat sealed before tubular glass lamp container 310 is vacuumized, and the prior art type closure 313 of the other end is vacuumizing tubular glass lamp container 310 and is being heat sealed after importing filler 360.In the sealing process of this prior art type closure 313, the air pressure inside of Glass lamp container 310 is lower than atmospheric pressure, and the glass material that is in soft condition because of high temperature when therefore sealing is subjected to the external pressure extruding and forms shape in the discharge space that is inhaled into Glass lamp container 310.Therefore, the wall thickness of the glass of sealing 313 is extremely thin, thereby produces glass in the damaged easily problem of this part.
In order to address this problem, the present inventor has manufactured experimently the dielectric barrier discharge-type low-pressure discharge lamp 304 shown in Figure 25.This dielectric barrier discharge-type low-pressure discharge lamp 304 be obtain by the following method, promptly in manufacturing process, the no bead sealing 316 of one end of lamp was heat sealed before Glass lamp container 310 is vacuumized, bead sealing 314 for the other end of lamp, it is the position that blade (blade) type bead 344 is inserted into the bead sealing 314 of tubular glass lamp container 310, vacuumize with the inside of this state Glass lamp container 310, after importing filler 360, heat seal is carried out in the end that is covered with 344 pairs of tubular glass lamp containers 310 of bead.
Adopt the dielectric barrier discharge-type low-pressure discharge lamp 304 of this structure, get involved wherein by making blade type bead 344, can produce structure shown in Figure 25, promptly form structure, and the glass of this bead sealing 314 is not inhaled in the discharge space to outside convex.Yet, under the situation of the latter's dielectric barrier discharge-type low-pressure discharge lamp 304, then need bead sealing 314, thereby produce the problem that is used in the increase of apparatus number of packages in making and causes manufacturing cost to increase, in the manufacture process of discharge lamp, originally only used glass tube, according to this glass tube itself, the no bead hermetically-sealed construction that preferably adopts two ends all to seal.
[patent documentation 1] Japan opens clear 61-126559 communique in fact
[patent documentation 2] TOHKEMY 2004-146351 communique
The present invention is in view of the problem that such prior art exists is finished, its purpose is to provide the two ends in the glass tube to adopt no bead hermetically-sealed construction simultaneously, thereby can reduce the wall thickness of the glass of product cost and increase sealing, make the not discharge lamp firm in structure of cracky of this part, the manufacture method of this discharge lamp and the dielectric barrier discharge-type low-pressure discharge lamp that adopts such discharge lamp.
Summary of the invention
The discharge lamp of the application the 1st invention utilizes the material of this glass tube self and makes the heat seal portion of the heavy wall thicker than the wall thickness in this glass tube form the shape of outside protrusion, and the two ends in the glass tube are sealed respectively.
The discharge lamp of the application's the 2nd invention, the heat seal portion that formation utilizes the material of this glass tube self to form, end in the glass tube is sealed, utilize the material of this glass tube self and the heavy section of the convex that outwards protrude the end of formation from this glass tube, the other end in this glass tube is sealed.
The manufacture method of the discharge lamp of the application's the 3rd invention, do not make the bead material carry out heat seal to the end in the glass tube with getting involved, the described heat seal end that leaves in the described glass tube is only heated on the one side on every side at the position of purpose lamp length, compress in the longitudinal direction on one side, thereby form the heavy section that intercommunicating pore is opened in inside, vacuum suction is carried out to inner air in open sides end from described glass tube, discharge medium is injected in inside in the described glass tube, the described heavy section that contrasts in the described glass tube heats near the position in the positive outside of described open end, downcut remainder in the glass tube in the mode that keeps this heavy section, the heavy section in the described glass tube is carried out heat seal.
The manufacture method of the discharge lamp of the application's the 4th invention, do not make the bead material carry out heat seal to the end in the glass tube with getting involved, the described heat seal end that leaves in the described glass tube is only heated on the one side on every side at the position of purpose lamp length, compress in the longitudinal direction on one side, thereby form the heavy section that intercommunicating pore is opened in inside, vacuum suction is carried out to inner air in open sides end from described glass tube, discharge medium is injected in inside in the described glass tube, the described heavy section that contrasts in the described glass tube heats near the position in the positive outside of described open end, downcut remainder in the glass tube in the mode that keeps this heavy section, the heavy section in the described glass tube is carried out heat seal.
The manufacture method of the discharge lamp of the application's the 5th invention, do not make the bead material carry out heat seal to the end in the glass tube with getting involved, the open end of the opposition side of the closed end of heat-resisting thin rod from described glass tube is inserted into the only long part of purpose lamp of the described closed end that leaves in this glass tube, with the state that inserts described heat-resisting thin rod to only leave the long position of the described purpose lamp of described glass tube around heat, compress in the longitudinal direction simultaneously to form heavy section, open sides end from described glass tube is extracted described heat-resisting thin rod out, vacuum suction is carried out to inner air in open sides end from described glass tube, discharge medium is injected in inside in the described glass tube, heat at position to the positive outside of comparing the more close described open end of described heavy section in the described glass tube, downcut remainder in the glass tube in the mode that keeps this heavy section, the heavy section in the described glass tube is carried out heat seal.
The manufacture method of the discharge lamp of the application's the 6th invention, the open end of heat-resisting thin rod from the sufficiently long glass tube of the total length of comparing the purpose discharge lamp is inserted into the predetermined formation position of heavy section of an end of the purpose discharge lamp that becomes in this glass tube, with the state that inserts described heat-resisting thin rod to heating around the predetermined formation position of the described heavy section in the described glass tube, compress in the longitudinal direction simultaneously, to form heavy wall, position to the other end that becomes the described purpose discharge lamp of described glass tube does not make the bead material not carry out heat seal with getting involved, open sides end from described glass tube is extracted described heat-resisting thin rod out, vacuum suction is carried out to inner air in open sides end from described glass tube, discharge medium is injected in inside in the described glass tube, heat at the position that contrasts the positive outside of the more close described open end of described heavy section in the described glass tube, downcut remainder in the glass tube in the mode that keeps this heavy section, the heavy section in the described glass tube is carried out heat seal.
The manufacture method of the discharge lamp of the application's the 7th invention is in the manufacture method of the discharge lamp of the 5th or 6 inventions, only use will with the predetermined carefully rod of minor diameter that the corresponding head portion in position makes φ 0.6～0.8mm that forms of the heavy section in the described glass tube, as described heat-resisting thin rod.
The dielectric barrier discharge lamp of the application's the 8th invention, discharge medium enclose is formed inside in the glass tube of Ampereconductors layer as outer electrode at outer surface, wherein, described Ampereconductors layer is made up of cylindrical metal and solder, himself plays a role described solder layer as the Ampereconductors layer, and described cylindrical metal is fixed on the described glass tube.
The dielectric barrier discharge lamp of the application's the 9th invention, possess: lamp tube ends is sealed, discharge medium is charged into the inner glass tube of pipe, the high-melting-point solder layer that forms on the outer peripheral face at the both ends in the described glass tube, and stick to each outside of described high-melting-point solder layer, be lower than the fixing cylindrical metal of low melting point solder layer of described high-melting-point solder layer with fusing point.
The dielectric barrier discharge lamp of the application's the 10th invention is in the dielectric barrier discharge lamp of the 8th or 9 inventions, without the lamp tube ends in the described glass tube of bead glass intervention ground sealing.
If adopt the discharge lamp of the application's the 1st invention, then the two ends of pipe are no bead hermetically-sealed construction, therefore compare with the situation of using the bead material to seal, thereby can cut down the cost that apparatus number of packages in the manufacture process can reduce product, and, therefore can provide gas tightness high discharge lamp owing to be the heat seal that utilizes glass tube itself to carry out.
If adopt the discharge lamp of the application's the 2nd invention, then when carrying out this manufacturing, can adopt following manufacture method, promptly do not make the bead material carry out heat seal to the end in the glass tube with getting involved, heat and compress along the direction of tubular axis simultaneously leaving the long part of lamp that heat seal end in the glass tube has only regulation, thereby form the heavy section of little intercommunicating pore in inside, and on the other end, the other end from the glass tube that an end is closed carries out vacuum suction to inner air, discharge medium is injected the inside of glass tube, the heavy section of comparing in the glass tube is heated at the position in the positive outside of tube axial direction, cut off remainder in the glass tube in the mode that keeps this heavy section, heavy section in the glass tube is carried out heat seal, utilize this manufacture method can make the discharge lamp that two ends are no bead hermetically-sealed construction, compare with the situation of using the bead material, thereby can cut down the cost that apparatus number of packages in the manufacture process can reduce product, and, therefore can make the high discharge lamp of gas tightness owing to be the heat seal that utilizes glass tube self to carry out.
If adopt the manufacture method of the discharge lamp of the application's the 3rd, 4 inventions, then can make the discharge lamp that two ends are no bead hermetically-sealed construction, compare with the situation of using bead shape material, thereby can cut down the cost that apparatus number of packages in the manufacture process can reduce product, and, therefore can make the high discharge lamp of gas tightness owing to be the heat seal that utilizes glass tube self to carry out.
If adopt the manufacture method of the discharge lamp of the application's the 5th～7 invention, can when forming heavy section, utilize heat-resisting thin rod to keep the shape of this part from the inboard, guarantee simultaneously tiny intercommunicating pore reliably, thus can high accuracy and make the discharge lamp that two ends are no bead hermetically-sealed construction expeditiously.Can high efficiency make.
If adopt the dielectric barrier discharge lamp of the application the 8th and 9 inventions, adopt following structure, promptly constitute Ampereconductors layer as outer electrode by cylindrical metal and solder layer, himself plays a role solder layer as the Ampereconductors layer, and cylindrical metal is fixed on the described glass tube, can be with this across the solder layer of soft metal, cylindrical metal is engaged with periphery in the glass tube, the skew that can utilize solder layer absorbed layer linear expansion degree difference between the two to be produced prevents that glass tube from splitting.Fluorescent tube can have long-term stability in use.
If adopt the dielectric barrier discharge lamp of the application's the 10th invention, fluorescent tube self is reduced cost and firm in structure, low, the firm in structure and high performance dielectric barrier discharge lamp of its cost can be provided as a whole.
Description of drawings
Fig. 1 is the process chart of manufacture method of the discharge lamp of embodiment of the present invention 1.
Fig. 2 is the amplification view in the glass tube of the operation C of embodiment of the present invention 1 when finishing.
Fig. 3 is the amplification view of the dielectric barrier discharge lamp when forming the outer surface electrode on the discharge lamp of making according to embodiment of the present invention 1 and finishing.
Fig. 4 is another routine amplification view of the dielectric barrier discharge lamp when forming the outer surface electrode on the discharge lamp of making according to embodiment of the present invention 1 and finishing.
Fig. 5 is the another example of dielectric barrier discharge lamp when forming the outer surface electrode on the discharge lamp of making according to embodiment of the present invention 1 and finishing.
Fig. 6 is the process chart of manufacture method of the discharge lamp of embodiment of the present invention 2.
Fig. 7 is the process chart of manufacture method of the discharge lamp of embodiment of the present invention 3.
Fig. 8 is to use the key diagram that forms operation in the heavy section of the manufacturing installation of the discharge lamp of embodiment of the present invention 3.
Fig. 9 is to use the key diagram that forms operation in the manufacturing installation necking part of the discharge lamp of embodiment of the present invention 3.
Figure 10 is the process chart of manufacture method of the discharge lamp of embodiment of the present invention 5.
Figure 11 is to use the key diagram that forms operation in the heavy section of the manufacturing installation of the discharge lamp of embodiment of the present invention 5.
Figure 12 is to use in the front view of the heat-resisting thin rod of embodiment of the present invention 5.
Figure 13 is to use the key diagram that forms operation in the manufacturing installation necking part of the discharge lamp of embodiment of the present invention 5.
The scolding tin heat resistant test result's of the discharge lamp of Figure 14 embodiment 1 that to be expression make according to embodiment of the present invention 5 and the discharge lamp of comparative example 1 table 1.
The scolding tin heat resistant test result's of the discharge lamp of Figure 15 embodiment 2 that to be expression make according to embodiment of the present invention 5 and the discharge lamp of comparative example 2 table 2.
Figure 16 is the cutaway view of the dielectric barrier discharge lamp of embodiment of the present invention 7.
Figure 17 is the cutaway view of the dielectric barrier discharge lamp of embodiment of the present invention 8.
Figure 18 is the cutaway view of the dielectric barrier discharge lamp of embodiment of the present invention 9.
The side view of the cylindrical metal that Figure 19 uses in the above-described embodiment.
Figure 20 is the cutaway view of the dielectric barrier discharge lamp of embodiment of the present invention 10.
Figure 21 is the cutaway view of the dielectric barrier discharge lamp of embodiment of the present invention 11.
Figure 22 is the front view of the dielectric barrier discharge lamp of embodiment of the present invention 12.
Figure 23 is the cutaway view of the dielectric barrier discharge lamp of embodiment of the present invention 13.
Figure 24 is the cutaway view of the dielectric barrier discharge lamp of prior art example.
Figure 25 is the cutaway view of the dielectric barrier discharge lamp of another prior art example.
Figure 26 is the front view of the dielectric barrier discharge lamp of another prior art example.
Label declaration
1,1A～1E dielectric barrier discharge lamp
2 glass tubes
4 soldering-tin layers
5 outer electrodes
6 luminescent coatings
7 discharge mediums
8 brakes
15 high-melting-point soldering-tin layers
16 cylindrical metals
17 low melting point soldering-tin layers
101 glass tubes
105 heat seal portions
109 heat-resisting thin rods
113 heavy sections
115 intercommunicating pores
131 no bead sealings
135 outer surface electrodes
137,137A, 137B low-voltage discharge lamp
Preferred forms
Below with reference to the accompanying drawings embodiments of the present invention are elaborated.Fig. 1 illustrates the manufacture method of the discharge lamp of the 1st execution mode of the present invention.
Operation A: prepare at least the inner surface coating as the part of purpose discharge lamp form luminescent coating, with respect to the sufficiently long glass tube 101 of the total length of purpose discharge lamp, make the heat seal operation of carrying out crimping behind the glass melting by heating with 103 pairs of one ends of burner, end sealing with glass tube 101 forms closed end 105.
Process B, C: the predetermined position 107 that forms the formation heavy section in the glass tube 101 with burner 111 heats, and makes the glass material fusing at this position 107, gives compression stress in the longitudinal direction, with this melt portions is shunk, thereby forms heavy section 113.Inside at heavy section 113 keeps little intercommunicating pore 115 in advance.Fig. 2 illustrates the amplification sectional view of the glass tube 101 after this operation.The 6th, fluorescent membrane.
Step D: with burner 117 baking from the heavy section 113 of glass tube 101 near open end near part, form necking part 119 in this part.
Operation E: from the open end of glass tube 101, will insert glass tubes 101, it is supported on the necking part 119 as the mercury (Hg) in mercury vapour source and cylindrical shell 121 as the alloy of the zircon of getter, aluminium etc.
Operation F: vacuumize the air of discharging inside from the open end of glass tube 101, afterwards, only inject one or more rare gas of ormal weight, then this open end is carried out heat seal as discharge medium.
Operation G: carry out high-frequency heating by insertion portion, make the vaporized mercury in the alloy cylinder 121, mercury vapour is diffused in the discharge space 125 of purpose discharge lamp by intercommunicating pore 115 with 123 pairs of alloy cylinder 121 of coil.
Step H: carry out heat seal thereby utilize the part of the immediate necking part 119 of the heavy section 113 in 127 pairs of glass tubes 101 of burner to heat, this part with the remainder 129 of glass tube 101 from discharge lamp 131 cut off.This adds the foreign gas that produces in the hot working alloy cylinder 121 absorption, plays the effect in the discharge space 125 that makes foreign gas not remain in discharge lamp 131.
The discharge space 125 of discharge lamp 131 is in high vacuum state, therefore cut off in the operation at this, extraneous gas is applying high pressure when intercommunicating pore 115 is wanted to enter discharge space 125, but by in advance intercommunicating pore 115 being made very little aperture, can form the closed end 133 of the convex of protruding laterally as shown in the figure, the existence by heavy section 113 does not make glass wall recessed to discharge space 125 sides when heat fusing welds.
Operation I: with respect to the discharge lamp 131 that obtains, the outer peripheral face at its two ends forms outer electrode 135, thereby finishes dielectric barrier discharge lamp 137.
If adopt the manufacture method of the discharge lamp of present embodiment, though then two closed ends 105,133 of manufactured discharge lamp 131 can be made is no bead structure but the convex all protruded laterally can be made the discharge lamp with sufficient intensity at an easy rate.
Fig. 3 illustrates the amplification sectional view of this discharge lamp of finishing 137.6 expression fluorescent membranes, 7 expression discharge mediums.As shown in Figure 3, utilize the effect of heavy section 113, no bead sealing 133 can be manufactured the shape of heaving to the outside of discharge lamp 131.In addition, the length a of no bead sealing 133 is thicker than glass tube walls thickness t, so the intensity in the glass tube also increases, thereby discharge lamp 131 is difficult for cracking.
Fig. 4 is in the present embodiment, the sectional view of the dielectric barrier discharge lamp 137A that the sintering time that adopt to prolong no bead sealing 133 is made with the discharge lamp 131A that seals more reliably, Fig. 5 are the sectional views that adopts the dielectric barrier discharge lamp pipe 137B that reduces the discharge lamp 131B making that sintering time makes on the contrary.Among Fig. 4, the face relative with the internal discharge space of no pearl sealing 133 forms convex, then forms matrix among Fig. 5.
Moreover, when adopting the manufacture method of discharge lamp of the execution mode 1 shown in Fig. 1, in initial operation A, form closed end 105, in follow-up process B～step D, form heavy section 113, intercommunicating pore 115 and necking part 119, but can switch these operations, the manufacture method of the discharge lamp of execution mode 2 as shown in Figure 6 is such, can original adoption process B～step D, implement operation A thereafter.
The manufacture method of the discharge lamp of embodiments of the present invention 3 then, is shown.Present embodiment is characterised in that, the roller of band angle is used for the compression carried out in order to form heavy section, utilizes its rotation to apply the power of one side of the open end in the glass tube (blast pipe side) being pressed to fluorescent tube one side.Can give the advantage that uniform compression stress can make the product performance homogenizing to each product thereby also have.
Below execution mode 3 is described with accompanying drawing 7～Fig. 9.Fig. 8, Fig. 9 illustrate the manufacturing installation that uses in the manufacture method of present embodiment, in the side (right side among the figure) of the making discharge lamp 131 of glass tube 101 rubber rollers 201 are set, and glass tube 101 is fixed.On the other hand, blast pipe one side (left side among the figure) has the rubber rollers 202,203 that heavy wall formation reservations is applied the band angle of compression stress in process B described later, C.Rubber rollers 202,203 its angles of inclination of this band angle are opposite, utilize identical rotation, rubber rollers 202 right-hand compression stress that gives in the figure of band angle, and on the contrary, the rubber rollers 203 of band angle plays the effect that in figure left gives tensile force.
Operation A: on above-mentioned manufacturing installation, preparation forms the sufficiently long glass tube 101 of total length luminescent coating, that be equivalent to the purpose discharge lamp in the inner surface coating of the part that becomes the purpose discharge lamp at least, make glass melting by heating with 103 pairs of one ends of burner, utilize the heat seal operation of crimping, end to glass tube 101 seals, and forms closed end 105.
Process B, C: as shown in Figure 8, predetermined position 107 with the formation heavy section in 111 pairs of glass tubes 101 of burner heats, make the glass material fusing at this position 107, utilize the rotation of the rubber rollers 202 of band angle, give compression stress in the longitudinal direction, with this melt portions is shunk, thereby form heavy section 113.Inside at heavy section 113 keeps tiny intercommunicating pore 115 in advance.The situation of the glass tube 101 after this operation is shown in the enlarged drawing of above-mentioned Fig. 2.But heavy section 113 can form the more wall thickness of thickening.
Step D: as shown in Figure 9, with burner 117 baking from the heavy section 113 of glass tube 101 near open end (keeping left the figure) near part, rubber rollers 203 rotations by making the band angle give tensile force to this part, form necking part 119.
Operation E: will insert glass tube 101 from the open end of glass tube 101 as the mercury (Hg) in mercury vapour source and cylindrical shell 121, it is supported on the necking part 119 as the alloy of the zircon of getter, aluminium etc.
Operation F: vacuumize the air of discharging inside from the open end of glass tube 101, afterwards, only inject one or more rare gas that become discharge medium of ormal weight, this open end is carried out heat seal.
Operation G: carry out high-frequency heating by insertion portion, make the vaporized mercury in the alloy cylinder 121, mercury vapour is diffused in the discharge space 125 of purpose discharge lamp by intercommunicating pore 115 with 123 pairs of alloy cylinder 121 of coil.
Step H: carry out heat seal thereby utilize the part of the immediate necking part 119 of the heavy section 113 in 127 pairs of glass tubes 101 of burner to heat, this part with the remainder 129 of glass tube 101 from discharge lamp 131 cut off under.This adds the foreign gas that produces in the hot working alloy cylinder 121 absorption, plays the effect in the discharge space 125 that makes foreign gas not remain in discharge lamp 131.
The discharge space 125 of discharge lamp 131 is in high vacuum state, therefore cut off in the operation at this, extraneous gas can apply high pressure when intercommunicating pore 115 is wanted to enter discharge space 125, but by in advance intercommunicating pore 115 being made very little aperture, can form laterally the closed end 133 of the convex of protruding as shown in the figure, and glass wall is not recessed into when heat fusing weld to discharge space 125 1 sides because of the existence of heavy section 113.
Operation I:, on the outer peripheral face at its two ends, form outer electrode 135, thereby finish dielectric barrier discharge lamp 137 to the discharge lamp 131 that obtains.
Adopt the manufacture method of the discharge lamp of present embodiment, although two closed ends 105,133 of manufactured discharge lamp 131 can be made is no bead structure but the convex all protruded laterally can be made the discharge lamp with sufficient intensity at an easy rate.In addition, utilize manufacturing installation, when forming heavy section 113 or forming necking part 119, give compression stress and tensile force respectively with the rubber rollers 202,203 of being with angle, can give uniform power to each product with this, thereby seek the homogenizing of properties of product.
Moreover, even in the present embodiment, form closed end 105 at initial operation A, in follow-up process B～step D, form heavy section 113, intercommunicating pore 115 and necking part 119, but can adopt following implementation method, promptly switch these operations, implement process B～step D earlier, implement operation A (manufacture method of the discharge lamp of execution mode 4) thereafter.
Manufacture method to the discharge lamp of embodiments of the present invention 5 describes below.Present embodiment is characterised in that, in order to form heavy section and tiny intercommunicating pore reliably and to be guaranteed, in advance heat-resisting thin rod is inserted in the glass tube, and will be used to form heavy section with the roller of angle, utilize its rotation to apply the power that the open end side in the glass tube (blast pipe side) is pressed in the fluorescent tube side, thereby and have can be to the advantage that each product gives uniform compression stress and the injection process of can implement reliably to bleed operation, discharge medium further improves the product homogenizing.
Below, execution mode 5 is described with Figure 10～Figure 13.Figure 11, Figure 13 illustrate the manufacturing installation that uses in the manufacture method of present embodiment, in the side (right side among the figure) of the making discharge lamp 131 of glass tube 101 rubber rollers 201 are set, and glass tube 101 is fixed.On the other hand, blast pipe one side (left side among the figure) has in following process B, C forming the rubber rollers 202,203 that the heavy wall reservations apply the band angle of compression stress.Rubber rollers 202,203 its angles of inclination with this angle are opposite, utilize identical rotation, and rubber rollers 202 right in the figure of band angle gives compression stress, and on the contrary, the rubber rollers 203 of band angle plays in the figure left to the effect that gives tensile force.In addition, the thin rod of tungsten system shown in Figure 12 is opened in the distolateral insertion glass tube 101 from this exhaust as heat-resisting thin excellent 109.As shown in figure 12, these heat-resisting thin excellent 109 its large-diameter portion 109a are φ 1.6mm, and minor diameter 109b is φ 0.6～0.8mm.Then, insert the formation reservations 107 of the little straight 109b of portion with the heavy section that is located at glass tube 101.
Operation A: on above-mentioned manufacturing installation, prepare inner surface coating in the part that becomes the purpose discharge lamp at least form luminescent coating, for the total length long enough glass tube 101 of purpose discharge lamp.Till being inserted into assigned position with shown in Figure 12 heat-resisting thin excellent 109 from the blast pipe open end then, then, make glass melting by heating with the end of 103 pairs of these fluorescent tube sides of burner, to the heat seal operation of its crimping, the end sealing with glass tube 101 forms closed end 105.
Process B, C: as shown in figure 11, predetermined position 107 with the formation heavy section of 111 pairs of glass tubes 101 of burner heats, make the glass material fusing at this position 107, utilize the rotation of the rubber rollers 202 of band angle, give compression stress in the longitudinal direction, with this melt portions is shunk, thereby form heavy section 113.At this moment, be inserted into the inboard that inner heat-resisting thin excellent 109 the 109b of pore portion is positioned at heavy section 113, heavy section 113 is carried out shaping, also play the effect that keeps tiny intercommunicating pore 115.The formation situation of the glass tube 101 after this operation is shown in the enlarged drawing of above-mentioned Fig. 2.Just heavy section 113 its shapes are more regular, and 115 shape of intercommunicating pore is also regular.
Step D: as shown in figure 13, with burner 117 baking from the heavy section 113 of glass tube 101 near open end (keeping left the figure) near part, rubber rollers 203 rotations by making the band angle give tensile force to this part, form necking part 119.Form after this necking part 119, heat-resisting thin excellent 109 extract from the blast pipe open end.
Operation E: will insert glass tube 101 from the open end of glass tube 101 as the mercury (Hg) in mercury vapour source and cylindrical shell 121, it is supported on the necking part 119 as the alloy of the zircon of getter, aluminium etc.
Operation F: vacuumize the air of discharging inside from the open end of glass tube 101, afterwards, only inject one or more rare gas of ormal weight, this open end is carried out heat seal as discharge medium.
Operation G: carry out high-frequency heating by insertion portion, make the vaporized mercury in the alloy cylinder 121, mercury vapour is diffused in the discharge space 125 of purpose discharge lamp by intercommunicating pore 115 with 123 pairs of alloy cylinder 121 of coil.
Step H: carry out heat seal thereby utilize the part of the nearest necking part 119 of the heavy section 113 in 127 pairs of glass tubes 101 of burner to heat, downcut from purpose discharge lamp 131 at the remainder 129 of this part with glass tube 101.This adds the foreign gas that produces in the hot working alloy cylinder 121 absorption, plays the effect in the discharge space 125 that makes foreign gas not remain in discharge lamp 131.
The discharge space 125 of discharge lamp 131 is in high vacuum state, therefore downcut in the operation at this, extraneous gas applies high pressure when intercommunicating pore 115 is wanted to enter discharge space 125, but by in advance intercommunicating pore 115 being made very little aperture, can form laterally the closed end 133 of the convex of protruding as shown in the figure, and glass wall is recessed into because of the existence of heavy section 113 when heat fusing weld to discharge space 125 sides.
Operation I: to the discharge lamp 131 that obtains, the outer peripheral face at its two ends forms outer electrode 135, thereby finishes dielectric barrier discharge lamp 137.
Adopt the manufacture method of the discharge lamp of present embodiment, although two closed ends 105,133 of the discharge lamp 131 of manufacturing can be made is no bead structure but the convex all protruded laterally can be made the discharge lamp with sufficient intensity at an easy rate.In addition, thereby by utilizing manufacturing installation and will in the heat-resisting thin excellent 109 insertion glass tubes 101 heavy section 113 being carried out shaping, like this, when forming heavy section 113 and when forming necking part 119, rubber rollers 202,203 with the band angle applies compression stress and tensile force respectively, can give uniform power and carry out shaping each product with this, thereby can further seek the homogenizing of properties of product each product.
Moreover, even in the present embodiment, form closed end 105 at initial operation A, in follow-up process B～step D, form heavy section 113, intercommunicating pore 115 and necking part 119, but can adopt following implementation method, promptly switch these operations, implement process B～step D earlier, implement operation A (manufacture method of the discharge lamp of execution mode 6) afterwards.
(embodiment 1)
The glass tube that forms fluorescent membrane as the glass tube inner surface of material of external diameter φ 4.0mm, internal diameter φ 3.0mm, total length 710mm is rotated, with end heat seal in addition on the rotation disk-shaped roll.Make and should hold thermosealed glass tube rotation, the burner with coal gas, air, oxygen mixed gas forms predetermined position heating 2～3 seconds to this heavy section simultaneously.Utilize gathering roll (gathering roll) then thus this position is shunk blast pipe side direction fluorescent tube side extruding, form heavy section at heating part.At this moment, in order to ensure intercommunicating pore, the head portion of the thin tungsten bar of φ 1.6mm is reduced to φ 0.6～0.8mm by processing and is processed into columned thin rod be inserted into the predetermined position that forms of heavy section.Afterwards, glass tube is fixed, blow fluorescent tube one side of formation heavy section to prevent the softening of glass material with cold air again, with gas burner blast pipe one side is heated again simultaneously, with the tubulation roller glass tube is stretched, form necking part in the mode of the joint after the easy formation exhaust (チ ッ ピ Application グ).Afterwards, insert mercury, vacuumize,, after injecting mercury, heavy section is carried out heat seal, produce the long discharge lamp of 600mm through mercury is carried out the high-frequency heating operation.For this discharge lamp, respectively the both ends periphery is soaked the formation outer electrode from end 20mm with the interior scolding tin that carries out, thereby obtain the dielectric discharge lamp.With this as embodiment 1.
As a comparative example 1, make the discharge lamp of existing bead hermetically-sealed construction with same glass tube, equally with embodiment 1 then form same outer electrode, obtain discharge lamp.
Each 5 results that implement the scolding tin heat resistant tests to the discharge lamp of the discharge lamp of this embodiment 1 and comparative example 1 show in table 1 shown in Figure 14.Like this, its tolerance with respect to thermal stress of discharge lamp that can confirm embodiments of the invention is improved.
The glass tube inner surface as material at the total length 710mm of external diameter φ 8.0mm, internal diameter φ 7.2mm forms fluorescent membrane, the one end is carried out after the heat seal, the exhaust glass tube of external diameter φ 2.0mm, internal diameter φ 1.2mm is carried out the Hot fusion weld at opposite end.When carrying out this Hot fusion weld, the thin tungsten bar of φ 1.0mm is inserted in the exhaust glass tube guaranteeing intercommunicating pore, glass material being melted when connecting, metal pattern is pushed to carry out compression seal., insert mercury, vacuumize,, after injecting mercury, carry out heat seal, produce the long discharge lamp of 600mm through mercury is carried out the high-frequency heating operation thereafter.For this discharge lamp, respectively the part of both ends periphery from the end to 20mm carried out scolding tin and soak the formation outer electrode, thereby obtain the dielectric discharge lamp.With this as embodiment 2.
As a comparative example 2, make the discharge lamp of existing bead hermetically-sealed construction with same glass tube, equally with embodiment 2 then form same outer electrode, obtain discharge lamp.
Each 5 results that implement the scolding tin heat resistant tests to the discharge lamp of the discharge lamp of this embodiment 2 and comparative example 2 show in table 2 as shown in figure 15.Compare even also demonstrate thermal endurance at 300 ℃, do not demonstrate thermal endurance till the discharge lamp to 300 of the embodiment 2 of existing comparative example 2 ℃ with the discharge lamp of embodiments of the invention 2.Therefore, its tolerance with respect to thermal stress of discharge lamp that can confirm embodiments of the invention 2 is improved.
Dielectric barrier discharge lamp to embodiments of the present invention 7 describes below.Figure 26 illustrates in the patent documentation 1 dielectric barrier discharge lamp 1100 of record, and this is the dielectric barrier discharge lamp that the outside of existing lamp container has electrode.These existing dielectric barrier discharge lamp 1100 structures are as follows, are about to the inside that metallic vapour such as mercury charges into glass tube 1101, metallic conductor cylindraceous 1102,1103 are installed as outer electrode in two end peripheries of glass tube 1101.Such dielectric barrier discharge lamp, by externally adding the high frequency voltage that is transformed into high frequency by high-frequency power supply circuit 1104 between the electrode 1102,1103, with the glass part of the inboard of outer electrode 1102,1103 as electrostatic capacitance composition (hereinafter referred to as " C composition "), to supply high frequency electric power in the glass tube 1101, send light by this C composition thereby in lamp container 1101, produce discharge.Such dielectric barrier discharge lamp 1100, lamp self has the C composition, and therefore having can be with the advantage that in 1 high-frequency power supply circuit a plurality of lamps is lighted side by side.Yet, when adopting this existing dielectric barrier discharge lamp, to produce following problems, it is different with coefficient of linear expansion between the glass tube 1101 to be metallic conductors 1102,1103 cylindraceous such as nickel, therefore be difficult to direct mounted on surface metallic conductor at glass tube 1101, thereby for example glass is being welded under the situation that makes glass tube and metallic conductor close adhesion, in case implement thermal cycling test, thus the glass tube problem that lamp can not light of splitting can take place.
What solved such technical matters is exactly the dielectric barrier discharge lamp of embodiment of the present invention 7, can provide the adhesiveness between outer electrode and the glass tube good, can keep the dielectric barrier discharge lamp of performance steady in a long-term.
Figure 16 illustrates the structure of the dielectric barrier discharge lamp 1 of embodiments of the present invention 7.The dielectric barrier discharge lamp 1 of present embodiment, the two ends periphery of the glass tube 2 that is closed at two ends respectively covers cylindrical metal 3, and is covered with the outer surface of this cylindrical metal 3 and near the outer surface of glass tube 2 forms soldering-tin layer 4.Form the Ampereconductors layer by this cylindrical metal 3 and soldering-tin layer 4, with this Ampereconductors layer as outer electrode 5.Inner peripheral surface at glass tube 2 forms luminescent coating 6, in addition, the inner space of glass tube 2 is charged into the discharge medium 7 of rare gas or rare gas and mercury.
In the dielectric barrier discharge lamp 1 of the execution mode 7 of said structure, two ends periphery to glass tube 2 covers cylindrical metal 3 respectively, mode with the outer surface of the outer surface that covers this cylindrical metal 3 and near glass tube 2 covers soldering-tin layer 4, formation is as the Ampereconductors layer of outer electrode 5, the cylindrical metal 3 and the periphery of glass tube 2 are combined closely, and can utilize soldering-tin layer 4 to eliminate the skew that linear expansion degree difference is between the two produced, prevent that glass tube 2 from splitting, thereby obtain the performance of lamp steady in a long-term.
Then, with Figure 17 and Figure 18 the dielectric barrier discharge lamp 1A of embodiments of the present invention 8 is described.Execution mode 8 is characterised in that, to execution mode shown in Figure 16 7, uses as shown in figure 18 brake 8 cylindrical metals 3 are set in the end.Under the situation of present embodiment, as shown in figure 17, when this cylindrical metal 3 being covered on the end face of glass tube 1, position by making the brake 8 and the end face butt of glass tube 1, engage with soldering-tin layer 4.Moreover, among Figure 17, pass through for other inscapes of execution mode, to the identical label of execution mode 7 common means shown in Figure 16 mark.
In the dielectric barrier discharge lamp 1A of execution mode 8, when this cylindrical metal 3 is covered the end of glass tube 1, can utilize brake 8 to make the appropriate location location of cylindrical metal 3, thereby seek the raising of volume production stability in the end of glass tube 1.
Then, with Figure 19 the dielectric barrier discharge lamp 1B of embodiments of the present invention 9 is described.Execution mode 9 is characterised in that, in order to form Ampereconductors layer as outer electrode 5, thereby utilize ultrasonic wave scolding tin to soak to two ends of glass tube 1 respectively in advance and on the outer peripheral face of the end of glass tube 1, form soldering-tin layer 4, cylindrical metal 3 is sticked on it, and then utilize scolding tin cylindrical metal 3 to be fixed on the end of glass tube 1.Moreover, in Figure 19, to other inscapes of present embodiment, with execution mode 7 common means shown in Figure 16 on the identical label of mark.
In manufacture process, between the outer peripheral face of cylindrical metal 3 and glass tube 1 plurality of gaps is arranged, but in case produce such gap, then the contact resistance between the surface of cylindrical metal 3 and glass tube 1 become greatly and resistance value unstable, the electrical characteristic of lamp is easy to generate the quality fluctuation of product.Yet, as described in present embodiment, form thin soldering-tin layer 4 if utilize ultrasonic wave that scolding tin is immersed in glass tube 1 end, cylinder metal 3 is sticked on this soldering-tin layer, and then on this basis, weld, then soldering-tin layer 4 in filling between the surface of cylindrical metal 3 and glass tube 1, and electrically contacting between cylindrical metal 3 and the glass tube 1 is good, thereby can improve the electrical characteristic fluctuation of lamp.Moreover, even in the present embodiment, also can as enforcement mode 8, use the cylindrical metal 3 that has brake 8.
Then, with Figure 20 the dielectric barrier discharge lamp 1C of embodiments of the present invention 10 is described.Execution mode 10 is characterised in that, with respect to execution mode shown in Figure 16 7, adopts the metal of opening in a plurality of through holes according to as cylindrical metal 3A, utilizes soldering-tin layer 4 respectively the both ends of glass tube 1 to be welded.Moreover, in Figure 20, for other inscapes of present embodiment, at the parts mark identical label common with execution mode shown in Figure 16 7.
Adopt present embodiment, the cylindrical metal 3A that a plurality of through holes are opened sticks to the end of glass tube 1, therefore when it being welded with soldering-tin layer, can utilize a plurality of through holes that the gap between the surface of inner surface that the scolding tin of fusing flows into cylindrical metal 3A dearly and glass tube 1 is engaged, by means of soldering-tin layer 4, obtain good electrical contact between cylindrical metal 3A and the glass tube 1, thereby can improve the deviation of the electrical characteristic of lamp.Moreover, even in the present embodiment, also can as enforcement mode 8, adopt the cylindrical metal that has brake 8.
Then, with Figure 11 the dielectric barrier discharge lamp 1D of embodiments of the present invention 11 is described.The two ends of not had bead sealed glass pipe 2 (borosilicate glass) at two ends form high-melting-point soldering-tin layer 15 (for example Sn-Zn series lead-free soldering tins [putting about 200 ℃]), on it, cover rubber-like drum metal 16 (for example metal tapes of Kovar alloy system), thereby constitute outer electrode 5.This drum metal 16 is adjusted, made its coefficient of linear expansion identical with glass tube 2.And then, drum metal 16 close adhesion are fixed on low melting point soldering-tin layer 17 with these outer electrode 5 whole low melting point solder baths (for example tin-indium series lead-free soldering tin (about 150 ℃ of fusing point)) that immerse.For stationary cylinder shape metal 16, adopt fusing point to be lower than the low melting point scolding tin of high-melting-point soldering-tin layer 15, therefore can not make high-melting-point soldering-tin layer 15 fusing ground with the surface of its close adhesion at glass tube 2, also can utilize low melting point soldering-tin layer 17 that drum metal 16 close adhesion are fixed on high-melting-point scolding tin 15, thereby can make the well behaved discharge lamp of lighting a lamp.In addition, owing to adopt no bead sealing, so the effect of sealing proof stress, can prevent to split because of the stress that applies at glass in the heating process, thereby can use for a long time.
Then, the dielectric barrier discharge lamp 1E with Figure 22,23 pairs of embodiments of the present invention 12 describes.Execution mode 12 is characterised in that, for forming the Ampereconductors layer as outer electrode 5, sticks to the banded cylindrical metal 3 of rubber-like of coating electrically conductive bonding agent x l on the inner peripheral surface.Moreover, among Figure 22, Figure 23, to other inscapes of present embodiment, with execution mode 7 common means shown in Figure 16 on the identical label of mark.
In manufacture process, between the outer peripheral face of cylindrical metal 3 and glass tube 1 plurality of gaps is arranged, in case such gap is arranged, then the contact resistance between the surface of cylindrical metal 3 and glass tube 1 become big and resistance value unstable, fluctuate with product easily as the electrical characteristic of lamp.Yet, as described in present embodiment, cylindrical metal 3 adopts the rubber-like metal and utilizes conductive adhesive x l to stick to the periphery of the end of glass tube 1, conductive adhesive x l is between the surface of cylindrical metal 3 and glass tube 1, electrically contacting between cylindrical metal 3 and the glass tube 1 is good, thereby can improve the electrical characteristic fluctuation of lamp.Adopt a kind of from iron, nickel, silver, carbon, selecting or multiple conducting particles as this conducting particles among the conductive adhesive x l here.Moreover, in the present embodiment, also can as enforcement mode 5, adopt the cylindrical metal 3 that has brake portion 8.
Moreover, as enforcement mode 7～12, the discharge lamp of making by execution mode 1～6 is formed outer electrode 5, thereby can provide thermal stress resistance strong and stay-in-grade dielectric barrier discharge lamp.
(embodiment 3)
The dielectric barrier discharge lamp of the dielectric barrier discharge lamp of the embodiment 3 of formation as described below and comparative example 3 is made and it is implemented thermal cycling test.
(embodiment 3)
＜glass tube 〉
Material: pyrex; Size: external diameter 4mm, internal diameter 3mm, total length 700mm
＜cylindrical metal 〉
Material: copper (zinc-plated) system, length: 19mm
＜soldering-tin layer 〉
Tin-zinc lead-free scolding tin
＜luminescent coating 〉
Material: 3 wavelength fluorescent bodies, thickness: 20 microns
＜discharge medium 〉
The mist (60torr) of neon and argon (10%)
Adopt above inscape, cylindrical metal is sticked on the periphery at the two ends in the glass tube, form soldering-tin layer, make the dielectric barrier discharge lamp of embodiment 3 with this.
(comparative example 3)
Identical with embodiment 3, on the fluorescent tube identical, form luminescent coating with embodiment, in addition discharge medium is charged into this fluorescent tube.Then, cylindrical metal made of copper is sticked to two ends of glass tube 1, directly the end in the glass tube is carried out depositedly, produce the dielectric barrier discharge lamp of comparative example 3 with this.
Above embodiment 3 and comparative example are implemented, when under each environment of-20 ℃/80 ℃, respectively putting 1 hour thermal cycling test as 1 circulation, in the prior art example, glass tube damages through 10 circulation times, and in embodiment 1, after 1000 circulations, damage in the glass tube and scolding tin obscission etc. had not both taken place, the phenomenon that cylindrical metal comes off does not take place yet.
(embodiment 4)
Effect to the making of the dielectric barrier discharge lamp of the dielectric barrier discharge lamp of the embodiment 4 of following formation and comparative example 4 compares.
(embodiment 4)
＜glass tube container 〉
Material: pyrex
Size: external diameter 4mm, internal diameter 3mm, total length 700mm
＜cylindrical metal 〉
Material: Kovar alloy
Length: 19mm
＜high-melting-point scolding tin 〉
Tin-zinc lead-free scolding tin
＜low melting point scolding tin 〉
Tin-indium series lead-free soldering tin
＜luminescent coating 〉
Material: 3 wavelength fluorescent bodies
Thickness: 20 microns
＜discharge gas 〉
Charge into gas: neon+argon (10%) (meter 60torr) and mercury
＜encapsulating method 〉
The no bead sealing of execution mode 1
Above as embodiment 4
(comparative example 4)
＜glass tube container 〉
Material: pyrex
Size: external diameter 4mm, internal diameter 3mm, total length 700mm
＜cylindrical metal 〉
Material: nickel
Length: 19mm
＜scolding tin 〉
Tin-zinc lead-free scolding tin
＜luminescent coating 〉
Material: three-wavelength fluorophor
Thickness: 20 microns
＜packing material 〉
Enclose gas: neon+argon gas (10%) [about 60torr] and mercury
＜encapsulating method 〉
The bead sealing of prior art example
With above as a comparative example 4.
Make 100 difference tubes with above embodiment 4 and comparative example 4, in embodiment 4, the situation that crackle or high-melting-point melts soldering tin flow does not appear, and crackle appears in sealing in the comparative example 4, lamp tube air leaking, or the gap between cylindrical metal and glass has soldering-tin layer to flow, and seals deterioration between cylindrical metal and the glass tube surface, and current fluctuation is big.
Effect to the situation of the dielectric barrier discharge lamp of the dielectric barrier discharge lamp of the embodiment 5 that is produced as follows described formation and comparative example 5 compares.
(embodiment 5)
＜glass tube container 〉
Material: pyrex
Size: external diameter 4.0mm, total length 700mm
＜outer electrode 〉
Ampereconductors layer: metal level
Outer electrode length: 25mm
＜luminescent coating 〉
Material: 3 wavelength fluorescent bodies
Thickness: 20 microns
＜filler 〉
Enclose gas: the mist of neon and argon
(ratio of components: neon/argon=90 mole %/10 moles of %)
Enclose pressure: 50torr
Mercury: enclosed volume 3mg
Make 100 of discharge lamps with structure as mentioned above with the method that is shown in the 1st example.
Comparative example 5
Ampereconductors layer: metal level
Outer electrode length: 25mm
＜luminescent coating 〉
Material: 3 wavelength fluorescent bodies
Thickness: 120 microns
＜filler 〉
Enclose gas: the mist of neon and argon
(ratio of components: neon/argon=90 mole %/10 moles of %)
Enclose pressure: 50torr
Mercury: enclosed volume 3mg
Make 100 discharge lamps with structure as mentioned above with the method that does not form the heavy section fusion weld.
Study the discharge lamp of 100 embodiments of the invention 5 and comparative example 5 respectively, in embodiment 5, the bad waste product that causes of bead both seals does not take place, and in comparative example 5,60 tubes exist poor sealing to become waste product in this part.
Be produced as follows the dielectric barrier discharge lamp of embodiment 6 of described structure and the dielectric barrier discharge lamp of comparative example 6, measure lining intensity.
(embodiment 6)
＜glass tube 〉
Material: pyrex, size: external diameter 4mm, internal diameter: 3mm, total length 700mm
＜cylindrical metal 〉
Material: copper (zinc-plated) system, length: 19mm, band shape
＜conductive adhesive 〉
Silicon is bonding agent+silver fillers
＜luminescent coating 〉
Material: 3 wavelength fluorescent bodies, thickness: 20 microns
＜discharge medium 〉
The mist (60torr) and the mercury of neon and argon (10%)
Adopting as mentioned above, structural element forms soldering-tin layer at glass tube two ends periphery covering cylindrical metal, the dielectric barrier discharge lamp of making embodiment 6.
(comparative example 6)
Form the luminescent coating identical on the glass tube identical, enclose discharge medium again with embodiment 6 with embodiment 6.In the cylindrical metal made of copper inside and the same conductive adhesive of example 6 coatings of non-band shape, then it is covered the both ends of glass tube 1, make the dielectric barrier discharge lamp of comparative example 6.
Claims (10)
1. a discharge lamp is characterized in that,
Utilize the material of this glass tube self and make the heat seal portion of the heavy wall thicker form the shape of outside protrusion, the two ends in the glass tube are sealed respectively than the wall thickness in this glass tube.
2. a discharge lamp is characterized in that,
The heat seal portion that formation utilizes the material of this glass tube self to form, end in the glass tube is sealed, utilize the material of this glass tube self and the heavy section of the convex that outwards protrude the end of formation from this glass tube, the other end in this glass tube is sealed.
3. the manufacture method of a discharge lamp is characterized in that,
Do not make the bead material carry out heat seal to the end in the glass tube with getting involved,
To leave in the described glass tube described heat seal end only the long position of purpose lamp around heat, compress in the longitudinal direction on one side, thereby the heavy section of opening at inside formation intercommunicating pore,
Vacuum suction is carried out to inner air in open sides end from described glass tube,
Discharge medium is injected in inside in the described glass tube,
The described heavy section that contrasts in the described glass tube heats near the position in the positive outside of described open end, downcuts remainder in the glass tube in the mode that keeps this heavy section,
Heavy section in the described glass tube is carried out heat seal.
4. the manufacture method of a discharge lamp is characterized in that,
Heat around the predetermined formation position of the heavy section in the sufficiently long glass tube of total length of contrast purpose discharge lamp, on length direction, compress simultaneously, thereby form the heavy section that intercommunicating pore is being opened in inside,
To becoming the position of the other end of purpose discharge lamp described in the described glass tube, do not make the bead material carry out heat seal with getting involved,
Vacuum suction is carried out to inner air in open sides end from described glass tube,
Discharge medium is injected in inside in the described glass tube,
The described heavy section that contrasts in the described glass tube heats near the position in the positive outside of described open end, downcuts remainder in the glass tube in the mode that keeps this heavy section,
Heavy section in the described glass tube is carried out heat seal.
5. the manufacture method of a discharge lamp is characterized in that,
Do not make the bead material carry out heat seal to the end in the glass tube with getting involved,
The open end of the opposition side of the closed end of heat-resisting thin rod from described glass tube is inserted into the only long part of purpose lamp of the described closed end that leaves in this glass tube,
With the state that inserts described heat-resisting thin rod to only leave the long position of the described purpose lamp of described glass tube around heat, compress in the longitudinal direction simultaneously forming heavy section,
Open sides end from described glass tube is extracted described heat-resisting thin rod out,
Vacuum suction is carried out to inner air in open sides end from described glass tube,
Discharge medium is injected in inside in the described glass tube,
Heat at position to the positive outside of comparing the more close described open end of described heavy section in the described glass tube, downcuts remainder in the glass tube in the mode that keeps this heavy section,
Heavy section in the described glass tube is carried out heat seal.
6. the manufacture method of a discharge lamp is characterized in that,
The open end of heat-resisting thin rod from the sufficiently long glass tube of the total length of comparing the purpose discharge lamp is inserted into the predetermined formation position of heavy section of an end of the purpose discharge lamp that becomes in this glass tube,
, compress in the longitudinal direction simultaneously heating around the predetermined formation position of the described heavy section in the described glass tube with the state that inserts described heat-resisting thin rod, forming heavy wall,
Position to the other end that becomes the described purpose discharge lamp of described glass tube does not make the bead material not carry out heat seal with getting involved,
Open sides end from described glass tube is extracted described heat-resisting thin rod out,
Vacuum suction is carried out to inner air in open sides end from described glass tube,
Discharge medium is injected in inside in the described glass tube,
Heat at the position that contrasts the positive outside of the more close described open end of described heavy section in the described glass tube, downcuts remainder in the glass tube in the mode that keeps this heavy section,
Heavy section in the described glass tube is carried out heat seal.
7. according to the manufacture method of claim 5 or 6 described discharge lamps, it is characterized in that,
Only use will with the predetermined carefully rod of minor diameter that the corresponding head portion in position makes φ 0.6～0.8mm that forms of the heavy section in the described glass tube, as described heat-resisting thin rod.
8. dielectric barrier discharge lamp is enclosed discharge medium inside in the glass tube that forms the Ampereconductors layer as outer electrode at outer surface, it is characterized in that,
Described Ampereconductors layer is made up of cylindrical metal and solder,
Himself plays a role described solder layer as the Ampereconductors layer, and described cylindrical metal is fixed on the described glass tube.
9. a dielectric barrier discharge lamp is characterized in that possessing
Lamp tube ends is sealed, discharge medium is charged into the inner glass tube of pipe,
The high-melting-point solder layer that forms on the outer peripheral face at the both ends in the described glass tube, and
Stick to each outside of described high-melting-point solder layer, be lower than the fixing cylindrical metal of low melting point solder layer of described high-melting-point solder layer with fusing point.
10. according to Claim 8 or 9 described dielectric barrier discharge lamps, it is characterized in that,
Without the lamp tube ends in the described glass tube of bead glass intervention ground sealing.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004245138 | 2004-08-25 | ||
| JP2004245138 | 2004-08-25 | ||
| JP2004-245138 | 2004-08-25 | ||
| JP2004305823 | 2004-10-20 | ||
| JP2004-305823 | 2004-10-20 | ||
| JP2004305823 | 2004-10-20 | ||
| JP2005175253A JP2006147524A (en) | 2004-08-25 | 2005-06-15 | Discharge lamp tube, its manufacturing method and dielectric barrier discharge lamp |
| JP2005-175253 | 2005-06-15 | ||
| JP2005175253 | 2005-06-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1755869A true CN1755869A (en) | 2006-04-05 |
| CN1755869B CN1755869B (en) | 2010-12-08 |
Family
ID=36626947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100959419A Expired - Fee Related CN1755869B (en) | 2004-08-25 | 2005-08-23 | Discharge lamp and its manufacturing method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2006147524A (en) |
| KR (1) | KR100755634B1 (en) |
| CN (1) | CN1755869B (en) |
| TW (1) | TW200618033A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4546344B2 (en) * | 2005-06-16 | 2010-09-15 | 有限会社ナプラ | External electrode fluorescent lamp, manufacturing method thereof, and liquid crystal display device |
| KR101183418B1 (en) * | 2005-12-30 | 2012-09-14 | 엘지디스플레이 주식회사 | External Electrode Florescent Lamp And Backlight Unit Of Liquid Crtstal Display Device |
| CN101197243A (en) | 2006-12-08 | 2008-06-11 | 清华大学 | Field transmitting light tube |
| JP2009224185A (en) * | 2008-03-17 | 2009-10-01 | Harison Toshiba Lighting Corp | Discharge lamp and manufacturing method therefor |
| JP2010010051A (en) * | 2008-06-30 | 2010-01-14 | Nec Lighting Ltd | Light-emitting device and liquid crystal display device having the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE507222A (en) * | 1950-11-21 | |||
| JPS508385A (en) * | 1973-05-28 | 1975-01-28 | ||
| JPH0817091B2 (en) * | 1989-04-28 | 1996-02-21 | 東芝ライテック株式会社 | Low pressure discharge lamp |
| JPH0562595A (en) * | 1991-08-30 | 1993-03-12 | Iwasaki Electric Co Ltd | Manufacture of lighting tube |
| JP3032799B2 (en) * | 1996-03-05 | 2000-04-17 | 日本電気ホームエレクトロニクス株式会社 | Rare gas discharge lamp and method of manufacturing the same |
| CN1144649C (en) * | 1999-06-11 | 2004-04-07 | 日本板硝子株式会社 | Lead-free solder |
| EP1146544A4 (en) * | 1999-09-22 | 2004-06-23 | Harison Toshiba Lighting Corp | Fluorescent lamp |
| JP2001357782A (en) * | 2000-06-16 | 2001-12-26 | Matsushita Electric Ind Co Ltd | Fabrication process of fluorescent lamp |
| JP3910910B2 (en) * | 2001-11-30 | 2007-04-25 | ハリソン東芝ライティング株式会社 | External electrode discharge lamp |
| KR100630998B1 (en) * | 2002-12-25 | 2006-10-04 | 하리손 도시바 라이팅구 가부시키가이샤 | Dielectric Barrier Discharging Type Low Pressure Discharge Lamp |
-
2005
- 2005-06-15 JP JP2005175253A patent/JP2006147524A/en not_active Abandoned
- 2005-08-09 TW TW094126988A patent/TW200618033A/en not_active IP Right Cessation
- 2005-08-23 CN CN2005100959419A patent/CN1755869B/en not_active Expired - Fee Related
- 2005-08-24 KR KR1020050077665A patent/KR100755634B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TWI368251B (en) | 2012-07-11 |
| TW200618033A (en) | 2006-06-01 |
| CN1755869B (en) | 2010-12-08 |
| JP2006147524A (en) | 2006-06-08 |
| KR100755634B1 (en) | 2007-09-04 |
| KR20060050597A (en) | 2006-05-19 |
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